CN112383741A - Video display method and device - Google Patents
Video display method and device Download PDFInfo
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- CN112383741A CN112383741A CN201910689457.0A CN201910689457A CN112383741A CN 112383741 A CN112383741 A CN 112383741A CN 201910689457 A CN201910689457 A CN 201910689457A CN 112383741 A CN112383741 A CN 112383741A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
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Abstract
The application provides a video display method and a video display device, which belong to the technical field of computers, wherein the method is applied to video display equipment provided with at least two display layers, each display layer comprises a plurality of display windows which are arranged side by side, and the display windows which belong to the same display area display monitoring videos shot by the same monitoring equipment, and the method comprises the following steps: when the first display layer is displayed, acquiring a switching time interval of the display layer, a window offset and a current coordinate of a second display layer to be displayed; shifting the window offset of the second display layer from the position corresponding to the current coordinate to the direction same as the moving direction of the target monitoring object; and hiding the first display layer when the switching time interval is reached, and displaying the second display layer after the offset so as to enable the position of the target monitoring object when the second display layer is displayed to be the same as the position when the first display layer is displayed. By the method and the device, the video display effect of video monitoring on the target monitoring object can be improved.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a video display method and apparatus.
Background
In the safety guarantee of major activities, a worker can install monitoring equipment at a preset position and display videos shot by the monitoring equipment through display equipment so as to know the real-time situation of a target monitoring object, wherein the target monitoring object can be a target vehicle, and the display equipment can comprise a plurality of display windows for displaying videos shot by different monitoring equipment.
Due to the limited monitoring range of a single monitoring device, when the target monitoring object moves in the preset travel route, the server of the video monitoring system needs to change the monitoring device corresponding to the display window, so that the target monitoring object is always displayed on the display device. The specific treatment process comprises the following steps: the server may establish a layer, where the layer includes a display window, and along with movement of the target monitoring object, the server may sequentially determine, according to a preset time interval, monitoring devices corresponding to the display window among the monitoring devices installed at different positions of the preset travel route. Then, the server can acquire the video information of the monitoring device and display the video information in the display window.
However, after the server changes the monitoring device corresponding to the display window each time, the position of the target monitoring object in the display device may be changed, for example, the display window displays the monitoring video shot by the first monitoring device, when the target monitoring object moves from the left side to the right side of the display window, the server may change the monitoring device corresponding to the display window into the second monitoring device, the second monitoring device is the monitoring device adjacent to the first monitoring device in the preset trip route, at this time, the target monitoring object is displayed on the left side of the display window again, and the display effect of the video is poor.
Disclosure of Invention
An object of the embodiments of the present application is to provide a video display method and apparatus, so as to improve a video display effect when performing video monitoring on a target monitored object. The specific technical scheme is as follows:
in a first aspect, a video display method is provided, where the method is applied to a video display device, the video display device is provided with at least two display layers, each display layer includes a plurality of display windows arranged side by side, and the display windows in the display layers having the same display area are used to display a monitoring video shot by the same monitoring device, and the method includes:
acquiring a switching time interval, a window offset and a current coordinate of a second display layer to be displayed of the display layer in a state of displaying the first display layer;
shifting the second display layer from the position corresponding to the current coordinate to the window shift amount in the same direction as the moving direction of the target monitoring object;
and when the switching time interval is reached, hiding the first display layer and displaying the offset second display layer so as to enable the position of the target monitoring object when the second display layer is displayed to be the same as the position when the first display layer is displayed.
Optionally, the method further includes:
establishing at least two display layers based on a preset coordinate system, a preset layer establishing rule and a preset initial coordinate, wherein each display layer comprises at least two display windows which are displayed side by side;
determining first display windows with the same display areas in the at least two display layers;
and determining a monitoring equipment identifier of the first monitoring equipment corresponding to the first display window in a pre-stored monitoring equipment identifier sequence so as to enable the first display window to display the monitoring video shot by the first monitoring equipment, wherein the monitoring equipment identifier sequence is determined based on the moving direction of the target monitoring object.
Optionally, the shifting the second display layer from the position corresponding to the current coordinate to the direction same as the moving direction of the target monitoring object by the window shift amount includes:
judging whether the current coordinate comprises a preset boundary point coordinate or not;
if the boundary point coordinates are contained, determining a second display window in the second display layer according to the moving direction of the target monitoring object, and moving the second display window to the tail of a display window queue contained in the second display layer to obtain first coordinates of the second display layer;
determining a second coordinate of the second display layer according to the first coordinate, the window offset and the moving direction of the target monitoring object;
determining a monitoring equipment identifier of a second monitoring equipment which does not display the video in a pre-stored monitoring equipment identifier sequence, and determining the monitoring equipment identifiers arranged in the front as the monitoring equipment identifiers corresponding to a second display window in the monitoring equipment identifiers of the second monitoring equipment;
and if the boundary point coordinate is not included, determining a second coordinate of the second display layer according to the current coordinate, the window offset and the moving direction of the target monitoring object.
Optionally, the obtaining of the switching time interval of the display layer includes:
when a target monitoring object is detected, acquiring the moving speed of the target monitoring object and the monitoring range of the monitoring equipment;
determining the occurrence duration of the target monitoring object in the monitoring video of the monitoring equipment according to the monitoring range and the moving speed;
and dividing the occurrence duration by a preset offset number to obtain a switching time interval of the display layer.
In a second aspect, a video display apparatus is provided, where the apparatus is applied to a video display device, the video display device is provided with at least two display layers, each display layer includes a plurality of display windows arranged side by side, and the display windows in the display layers that belong to the same display area are used to display a monitoring video shot by the same monitoring device, and the apparatus includes:
the acquisition module is used for acquiring a switching time interval of a display layer, a window offset and a current coordinate of a second display layer to be displayed in a state of displaying the first display layer;
the shifting module is used for shifting the window offset from the position corresponding to the current coordinate of the second display layer to the direction same as the moving direction of the target monitoring object;
and the display module is used for hiding the first display layer and displaying the offset second display layer when the switching time interval is reached so as to enable the position of the target monitoring object when the second display layer is displayed to be the same as the position when the first display layer is displayed.
Optionally, the apparatus further comprises:
the system comprises an establishing module, a display module and a display module, wherein the establishing module is used for establishing at least two display layers based on a preset coordinate system, a preset layer establishing rule and a preset initial coordinate, and each display layer comprises at least two display windows which are displayed side by side;
the first determining module is used for determining first display windows with the same display areas in the at least two display layers;
and the second determining module is used for determining the monitoring equipment identifier of the first monitoring equipment corresponding to the first display window in a prestored monitoring equipment identifier sequence so as to enable the first display window to display the monitoring video shot by the first monitoring equipment, wherein the monitoring equipment identifier sequence is determined based on the moving direction of the target monitoring object.
Optionally, the offset module includes:
the judgment submodule is used for judging whether the current coordinate contains a preset boundary point coordinate or not;
the first determining submodule is used for determining a second display window in the second display layer according to the moving direction of the target monitoring object when the boundary point coordinate is included, and moving the second display window to the tail of a display window queue included in the second display layer to obtain a first coordinate of the second display layer;
the second determining submodule is used for determining a second coordinate of the second display layer according to the first coordinate, the window offset and the moving direction of the target monitoring object;
the third determining submodule is used for determining the monitoring equipment identifier of the second monitoring equipment which does not display the video in the prestored monitoring equipment identifier sequence, and determining the monitoring equipment identifier arranged in the front as the monitoring equipment identifier corresponding to the second display window in the monitoring equipment identifier of the second monitoring equipment;
and the fourth determining submodule is used for determining a second coordinate of the second display layer according to the current coordinate, the window offset and the moving direction of the target monitoring object when the boundary point coordinate is not included.
Optionally, the obtaining module includes:
the acquisition submodule is used for acquiring the moving speed of a target monitoring object and the monitoring range of the monitoring equipment when the target monitoring object is detected;
a fifth determining submodule, configured to determine, according to the monitoring range and the moving speed, an occurrence duration of the target monitored object in a monitoring video of the monitoring device;
and the sixth determining submodule is used for dividing the occurrence duration by the preset offset times to obtain the switching time interval of the display layer.
In a third aspect, an electronic device is provided, which includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
a processor adapted to perform the method steps of any of the first aspects when executing a program stored in the memory.
In a fourth aspect, a computer-readable storage medium is provided, having stored thereon a computer program which, when being executed by a processor, carries out the method steps of any of the first aspects.
According to the video display method and device provided by the embodiment of the application, the switching time interval, the window offset and the current coordinate of the second display layer to be displayed can be obtained in the state that the first display layer is displayed, and the window offset of the second display layer is offset from the position corresponding to the current coordinate to the direction same as the moving direction of the target monitoring object. Then, when the switching time interval is reached, the first display layer may be hidden, and the second display layer after the offset is displayed, so that the position of the target monitoring object when the second display layer is displayed is the same as the position when the first display layer is displayed. Because the display layer is shifted according to the movement of the target monitoring object and the shifted display layer is displayed, the target monitoring object can be always displayed in a preset area, and the video display effect when the moving target monitoring object is subjected to video monitoring is improved.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a display device according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method of displaying a video according to an embodiment of the present application;
fig. 3a is a schematic diagram of a default coordinate system according to an embodiment of the present application;
fig. 3b is a schematic diagram of a display layer according to an embodiment of the present application;
fig. 3c is a schematic diagram of a display layer according to an embodiment of the present application;
fig. 3d is a schematic diagram of a display layer according to an embodiment of the present application;
fig. 3e is a schematic diagram of a display layer according to an embodiment of the present application;
fig. 3f is a schematic diagram of a display layer according to an embodiment of the present application;
fig. 4 is a flowchart of a method of displaying a video according to an embodiment of the present application;
fig. 5 is a flowchart of a method of displaying a video according to an embodiment of the present application;
fig. 6 is a flowchart of a method of displaying a video according to an embodiment of the present application;
fig. 7a is a schematic view of a monitoring screen according to an embodiment of the present disclosure;
fig. 7b is a schematic diagram of a display layer according to an embodiment of the present application;
fig. 7c is a schematic diagram of a display layer according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a video display apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a video display method, which is applied to a video display device, wherein the video display device can be one device or a plurality of devices, for example, the video display device can be composed of a decoding device, a display device and a server for controlling the operation of each device in a video monitoring system, and the display device can be a monitoring video wall.
In the embodiment of the present application, a video display device is exemplified by a decoding device, a display device, and a server, and an execution process of a video display method is described.
The video monitoring system can comprise a monitoring device, a decoding device, a display device and a server, wherein the monitoring device can be a camera, and communication connection can be kept among all devices contained in the video monitoring system.
Before monitoring the target monitoring object, the server may establish a display window in the display device to display a monitoring picture taken by the monitoring device in the display window, where the display window is a virtual window in the display device and corresponds to the display window serving as the virtual window, and a display area to which the display window belongs is an actual display area in a display screen of the display device.
The specific process that the server displays the monitoring picture through the display window comprises the following steps: the server may determine coordinates of a monitoring picture displayed in the display window in a picture taken by the monitoring device, which will be referred to as coordinates of the display window for short, and send the coordinates of the display window and the identifier of the target monitoring device to the decoding device, so that the decoding device obtains video data from the target monitoring device. The decoding device may decode the video data, and determine, in the decoded video data, video data corresponding to the monitoring picture according to the coordinates of the display window, and then the decoding device may transmit the video data corresponding to the monitoring picture to the display device. Thereafter, the display device may display the monitoring screen in the display window.
With the continuous movement of the target monitoring object in the travel route, the server can determine the monitoring device identifier of the target monitoring device according to the pre-stored monitoring device identifier sequence and send the monitoring device identifier to the decoding device, so that the decoding device can acquire video data from different monitoring devices, and the display device can display the target monitoring object shot by different monitoring devices.
In the embodiment of the application, the decoding device may determine the video obtaining address of the target monitoring device according to the monitoring device identifier of the target monitoring device and the corresponding relationship between the pre-stored monitoring device identifier and the video obtaining address, and obtain video data obtained by shooting the target monitoring object by the target monitoring device from the video obtaining address.
As shown in fig. 1, a schematic diagram of a display device provided in an embodiment of the present application is shown, where the display device 110 includes 2 display windows 120, one display window 120 displays a target monitoring object 130, and a monitoring picture displayed in a certain display window may be acquired by one monitoring device or acquired by multiple monitoring devices.
The video display device is provided with at least two display layers, each display layer comprises a plurality of display windows arranged side by side, and the display windows with the same display areas in the display layers are used for displaying the monitoring video shot by the same monitoring device. In the embodiment of the present application, two display layers are arranged in a video display device, and each display layer includes 3 display windows arranged side by side, as an example, an execution process of a video display method is described, as shown in fig. 2, for a manner of establishing two display layers provided in the embodiment of the present application, a specific execution flow is as follows:
Each display layer comprises at least two display windows which are displayed side by side. The server may store therein a preset coordinate system, and the preset coordinate system may be a coordinate system established based on an output channel of the decoding apparatus. The server may store initial coordinates in advance, where the initial coordinates may be coordinates of each display window in each display layer, and the initial coordinates may also be coordinates of a certain display window. The server may also be preset with a layer establishment rule, where the layer establishment rule may be to establish a plurality of display windows side by side according to the coordinate of a certain display window and a preset display window size, and use the plurality of display windows as one layer. The layer establishing rule may also be to establish the display layer according to the coordinates of each display window in each display layer.
In implementation, when the initial coordinate is a coordinate of a certain display window, the server may determine coordinates of three parallel display windows in a preset coordinate system according to the initial coordinate and the size of the display window, so as to obtain coordinates of a display layer formed by the three display windows. Then, the server may determine, according to the preset window offset and the coordinates of the display layer, coordinates of a display window included in another display layer. Thus, the server can determine the coordinates of the two display layers. And then, the server can send the determined coordinates of the two display layers to the decoding device, so that the decoding device establishes 6 display windows according to the coordinates of the two display layers.
For example, as shown in fig. 3a, a schematic diagram of a preset coordinate system provided in an embodiment of the present application is shown, where J1 to J12 represent 12 output channels of a decoding device, and a display device is composed of 6 display screens, where output channels J1 to J3 and output channels J10 to J12 are not connected to the display device, and output channels J4 to J9 are respectively connected to the 6 display screens of the display device.
The server may establish a preset coordinate system based on the output channels of the decoder, and a corresponding size of one output channel is X, so that the server may set the size of each output channel to X in the preset coordinate system, and then, the server may use an upper left corner of the output channel J1 as an origin of the preset coordinate system, an arrangement direction of the output channels as an X-axis, and another direction perpendicular to the X-axis as a y-axis. The server may establish two display layers based on the layer establishment rule, where each display layer includes 3 display windows, and each display window corresponds to three output channels.
The server can determine the initial coordinates as [3X, 0, 6X, X ] from the upper left coordinate [3X, 0] of output channel J4 and the lower right coordinate [6X, X ] of output channel J6. The server may create three display windows according to the initial coordinates [3X, 0, 6X, X ] and the display window size 3X, the coordinates of the display windows being [3X, 0, 6X, X ], [6X, 0, 9X, X ], and [9X, 0, 12X, X ], respectively.
The server may determine coordinates of three display windows included in another display layer according to a preset window offset, for example, when the window offset is 2a, the coordinates of three display windows included in another display layer may be [3X-a, 0, 6X-a, X ], [6X-a, 0, 9X-a, X ], and [9X-a, 0, 12X-a, X ]. Thereby, the server may obtain the display layer as shown in fig. 3 b.
In implementation, the server may determine an arrangement sequence number of a certain display window in the display layer according to an arrangement sequence of each display window in the display layer, and then, the server may use, as the first display window, the display window with the same arrangement sequence number in the two display layers.
In a feasible implementation manner, the server may also calculate, for a display window included in a certain display layer, a coordinate difference between the display window and each display window included in another display layer, and use the display window whose coordinate difference is a preset value and the display window as the first display window. The preset value may be half the window offset.
As shown in fig. 3B, a1, a2, A3 represent display windows in display layer a, and a4, a5, a6 represent display windows in display layer B. The server can calculate the coordinate difference between the display window a1 and the display window a4, the display window a5 and the display window a6 in another display layer for the display window a1 included in the display layer a, and take the display window a4 and the display window a1 whose coordinate difference is a preset value as the first display window with the same display area. Similarly, it can be determined that the display window a2 and the display window a5, and the display window A3 and the display window a6 are the first display windows belonging to the same display region.
The server can determine the sequence of the target monitoring object appearing in the video pictures shot by each monitoring device according to the moving direction of the target monitoring object in the travel route, further determine the display sequence of the video data shot by each monitoring device, and store the monitoring device identification of each monitoring device according to the display sequence to obtain the monitoring device identification sequence.
In implementation, the server may sequentially select the monitoring device identifiers from the pre-stored monitoring device identifier sequences according to the display sequence of the first display windows, and use the monitoring device identifiers as the monitoring device identifiers of the first monitoring devices corresponding to the first display windows, so that the first display windows belonging to the same display area in the two display layers may display the monitoring videos shot by the same monitoring device.
For example, when the target monitoring object moves from the right side to the left side of the monitoring device, the monitoring device identification sequence may be C1-C2-C3-C4-C5, wherein C1, C2, C3, C4, and C5 are monitoring device identifications. The moving direction of the target monitoring object is leftward, and the display order of the monitoring videos displayed on the display windows in the display layers can be A1-A2-A3 and A4-A5-A6. Then, the server may select a monitoring device identifier C1 as a monitoring device identifier of a first monitoring device corresponding to the first display windows a1 and a4 from the monitoring device identifier sequences C1-C2-C3-C4-C5, the monitoring device identifier C2 as a monitoring device identifier of a first monitoring device corresponding to the first display windows a2 and a5, and the monitoring device identifier C3 as a monitoring device identifier of a first monitoring device corresponding to the first display windows A3 and a 6.
In the embodiment of the application, the server establishes two display layers based on a preset coordinate system, a layer establishing rule and an initial coordinate, and determines first display windows with the same display areas in the two display layers. Then, the server allocates the monitoring device identifiers of the same monitoring device to the first display windows in the two display layers in the pre-stored monitoring device identifier sequence, so that the first display windows in the two display layers can display the video pictures shot by the same monitoring device.
After the server establishes the two display layers, the server may perform switching display on the two display layers according to the switching time interval of the display layers, so that the target monitoring object is always displayed at the same position in the display device, as shown in fig. 4, the specific processing flow is as follows:
The server may store a window offset in advance, where the window offset may be 1/8 indicating the side length of the display window. The server may also store coordinates of display windows included in each display layer.
In implementation, when the monitoring device in the travel route shoots a target monitoring object, the server may use one of the two display layers as a first display layer, and use the other display layer as a second display layer to be displayed, and display the first display layer.
Then, in a state where the first display layer is displayed, the server may obtain a switching time interval and a window offset of the display layer. The server may use the coordinates of the display window included in the second display layer, which are stored in advance, as the current coordinates of the second display layer.
The specific process of the server acquiring the switching time interval will be described in detail later. In the embodiment of the present application, a process of displaying the first display layer by the server is the same as that in the prior art, and is not described herein again.
As shown in fig. 3B, the server may use the display layer a as a first display layer, and use the display layer B as a second display layer.
And 402, shifting the window offset of the second display layer from the position corresponding to the current coordinate to the direction same as the moving direction of the target monitoring object.
In implementation, the server may calculate the coordinates of the second display layer after the second display layer is shifted according to the current coordinates and the window offset of the second display layer, so as to shift the window offset of the second display layer from the position corresponding to the current coordinates to the direction the same as the moving direction of the target monitoring object.
For example, the current coordinates of the second display layer may be display window a4[3X-a, 0, 6X-a, X ], display window a5[6X-a, 0, 9X-a, X ], display window a6[9X-a, 0, 12X-a, X ], the moving direction of the target monitoring object is left, and the window offset is 2a, the server may determine the coordinates of the second display layer after offset to be display window a4[3X-3a, 0, 6X-3a, X ], display window a5[6X-3a, 0, 9X-3a, X ], display window a6[9X-3a, 0, 12X-3a, X ].
As shown in fig. 3c, which is a schematic diagram of a display layer provided in an embodiment of the present application, in a state that the display layer a is displayed, the display layer B is shifted from a position corresponding to the current coordinate by the window shift amount 2a in the same direction as the moving direction (leftward) of the target monitoring object.
In an implementation, the server may send a switching instruction to the decoding device when the switching time interval is reached, where the switching instruction includes the coordinates of the second display layer after the offset. After receiving the switching instruction, the decoding device may set the currently displayed first display layer to be invisible, and use the coordinates of the second display layer after the offset as the coordinates of the display window included in the second display layer in the next switching time interval. The decoding device may then send the coordinates and video data to be displayed to the display device. And then, the display device can display the monitoring video shot by the monitoring device in the display window corresponding to the coordinate.
For example, the switching time interval may be 20ms, and the server may transmit an instruction to the decoding apparatus when the operating time reaches 20ms from the last switching operation. The decoding device may set the display layer a to be invisible after receiving the switching instruction, and obtain the coordinates of the display layer B after the shifting: display window A4[3X-3a, 0, 6X-3a, X ], display window A5[6X-3a, 0, 9X-3a, X ], display window A6[9X-3a, 0, 12X-3a, X ] serves as coordinates of the display window included in display layer B in the next switching interval. Then, the decoding apparatus may transmit the coordinates and the video data acquired from the monitoring apparatuses C1, C2, C3 to the display apparatus. The display device may display the shifted monitoring screen.
In this embodiment of the application, the decoding device may display a certain display layer or hide a certain display layer by changing the display window corresponding to the output channel.
In the embodiment of the application, the video display device switches and displays the two display layers according to the switching time interval, on one hand, the monitoring pictures displayed by the display window can be automatically switched along with the movement of the target monitoring object, so that the display device can display the target monitoring object in real time, and the real-time situation of the target monitoring object can be conveniently mastered. On the other hand, the monitoring picture displayed by the display window can automatically roll along with the advancing direction of the target monitoring object, and the target monitoring object is always displayed in the preset area of the display device. Therefore, the video display effect when the moving target monitoring object is subjected to video monitoring can be improved.
Optionally, as shown in fig. 5, the server may perform the following steps when shifting the second display layer:
The server may be preset with boundary point coordinates, and the boundary point coordinates may be coordinates determined by the server based on the window offset, for example, the boundary point coordinates may be one of [ a, 0, 3X + a, X ] and [0, 0, 3X, X ].
In an implementation, after acquiring the current coordinates of the second display layer, the server may determine whether the current coordinates include boundary point coordinates, and if the current coordinates include the boundary point coordinates, perform step 502-step 504, and if the current coordinates do not include the boundary point coordinates, perform step 505.
Step 502, in the second display layer, according to the moving direction of the target monitoring object, determining a second display window, and moving the second display window to the tail of a display window queue included in the second display layer to obtain a first coordinate of the second display layer.
In implementation, the server may determine, in a display window queue included in the second display layer, the display window arranged at the forefront as the second display window according to the moving direction of the target monitoring object. Then, the server may move the second display window to the end of the display window queue included in the second display layer, and then, the server may determine the coordinate of the second display window to obtain the first coordinate of the second display layer.
For example, as shown in fig. 3d, the second display layer is a display layer B, the server may determine, in each display window a4, a5, and a6 included in the display layer B, that the display window a4 arranged at the forefront is the second display window according to the moving direction (leftward) of the target monitoring object, and then, the server may move the display window a4 to the back of the display window a6, and determine the coordinates of the moved display window a4 as [9X + a, 0, 12X + a, X ], thereby obtaining the first coordinates of the second display layer as a display window a5[3X + a, 0, 6X + a, X ], a display window a6[6X + a, 0, 9X + a, X ], a display window a4[9X + a, 0, 12X + a, X ]. The position of the second display layer in the preset coordinate system is shown in fig. 3 e.
In implementation, the server may determine the shift direction of the second display layer according to the moving direction of the target monitoring object, and determine that the window shift amount is a positive number or a negative number based on the shift direction. Then, the server may calculate a second coordinate of the second display layer according to the first coordinate of the second display layer and the window offset.
For example, the server may determine the shift direction (leftward) of the second display layer according to the moving direction (leftward) of the target monitoring object, and determine the window shift amount to be a negative number, i.e., -2a, based on the shift direction (leftward in the preset coordinate system, i.e., the negative x-axis). Then, the server may: displaying window a5[3X + a, 0, 6X + a, X ], displaying window a6[6X + a, 0, 9X + a, X ], displaying window a4[9X + a, 0, 12X + a, X ], window offset-2 a, and calculating a second coordinate of the second display layer as: display window A5[3X-a, 0, 6X-a, X ], display window A6[6X-a, 0, 9X-a, X ], display window A4[9X-a, 0, 12X-a, X ]. As shown in fig. 3f, which is a schematic diagram of a display layer provided in the embodiment of the present application, a server displays a display layer B as a first display layer, and then the server may execute step 501 with respect to the display layer a.
In implementation, the server may determine, from the pre-stored monitoring device identifier sequence, a monitoring device identifier of a second monitoring device that does not display the video, and then, the server may select, from the monitoring device identifiers of the second monitoring device, a monitoring device identifier arranged in the past as a monitoring device identifier corresponding to the second window.
For example, the server may determine, from the monitoring device identification sequences C1-C2-C3-C4-C5, that C4 and C5 are the monitoring device identifications of the second monitoring devices that do not display video, and then, the server may select, from C4 and C5, the monitoring device identification C4 that is arranged in the front as the monitoring device identification corresponding to the second display window a 4.
And 505, determining a second coordinate of the second display layer according to the current coordinate, the window offset and the moving direction of the target monitoring object.
In implementation, the server may determine the shift direction of the second display layer according to the moving direction of the target monitoring object, and determine that the window shift amount is a positive number or a negative number based on the shift direction. Then, the server may calculate a second coordinate of the second display layer according to the current coordinate of the second display layer and the window offset.
The specific process is similar to step 503 and will not be described herein again.
In the embodiment of the application, the manner of acquiring the switching time interval of the display layer by the server is various, the switching time interval may be stored in the server in advance, and the switching time interval may be a time interval preset by a technician according to experience; the server may also determine the switching time interval according to the moving speed of the target monitoring object, the monitoring range of the monitoring device, and the preset offset number, as shown in fig. 6, a specific processing flow of the method includes:
The server may pre-store the monitoring range of the monitoring device, and the server may obtain the pre-stored monitoring range of the monitoring device after detecting the target monitoring object.
In an implementation, the server may receive GPS (Global positioning system) information of the target monitoring object, and when the GPS information of the target monitoring object is preset target GPS information, the server may determine that the target monitoring object enters a monitoring range of the monitoring device, that is, the target monitoring object is detected. Then, the server may calculate the moving speed of the target monitoring object according to the GPS information of the target monitoring object.
In a feasible implementation manner, the server may detect the target monitoring object by performing image recognition on a monitoring picture captured by the monitoring device.
In implementation, the server may divide the monitoring range by the moving speed to obtain the occurrence duration of the target monitoring object in the monitoring video of the monitoring device.
For example, if the moving speed of the target monitoring object is 16m/s and the monitoring range of the monitoring device is 400m, the server may divide the monitoring range 400m by the moving speed of 16m/s to obtain the occurrence duration of 25 s.
For example, the preset number of offsets may be 100, and the server divides the occurrence duration 25s by 100 to obtain a switching time interval of 0.25 s.
As shown in fig. 7a, which is a schematic view of a monitoring picture provided in an embodiment of the present application, in a video picture taken by a monitoring device, when a moving direction of a target monitoring object 130 is leftward and monitoring times are t1 and t2, a position of the target monitoring object 130 is as shown in fig. 7 a. When the monitoring time is t1, the first display layer is a display layer B, and the solid-line frame area is a monitoring picture displayed by a display window A4 in the display layer B; when the monitoring time is t2, the first display layer is a display layer a, and the dashed frame area is a monitoring picture displayed in a display window a1 in the display layer a.
Accordingly, as shown in fig. 7b, when the monitoring time is t1, the position of the target monitoring object 130 in the display window of the display device is D, and at this time, the server may shift the display layer a by the window shift amount from the position corresponding to the current coordinate to the same direction (i.e., to the left) as the moving direction of the target monitoring object. When the preset switching time interval is 20ms, that is, the monitoring time is t2, the server may hide the display layer B and display the offset display layer a, where the offset monitoring screen is as shown in fig. 7c, and the position of the target monitoring object 130 in the display window of the display device is still D, so that the server may implement that the target monitoring object is always displayed in the preset area, and improve the video display effect when performing video monitoring on the moving target monitoring object.
The embodiment of the application still provides a video display device, as shown in fig. 8, the device is applied to video display equipment, video display equipment is provided with two at least display layers, and every display layer contains a plurality of display windows that set up side by side, and affiliated display area is the same display window is used for showing the surveillance video that same supervisory equipment was shot in each display layer, the device includes:
an obtaining module 810, configured to obtain a switching time interval of a display layer, a window offset, and a current coordinate of a second display layer to be displayed in a state where the first display layer is displayed;
a shifting module 820, configured to shift the window shift amount from the position corresponding to the current coordinate to a direction the same as the moving direction of the target monitoring object in the second display layer;
a display module 830, configured to hide the first display layer and display the offset second display layer when the switching time interval is reached, so that a position of the target monitoring object when the second display layer is displayed is the same as a position of the target monitoring object when the first display layer is displayed.
Optionally, the apparatus further comprises:
the system comprises an establishing module, a display module and a display module, wherein the establishing module is used for establishing at least two display layers based on a preset coordinate system, a preset layer establishing rule and a preset initial coordinate, and each display layer comprises at least two display windows which are displayed side by side;
the first determining module is used for determining first display windows with the same display areas in the at least two display layers;
and the second determining module is used for determining the monitoring equipment identifier of the first monitoring equipment corresponding to the first display window in a prestored monitoring equipment identifier sequence so as to enable the first display window to display the monitoring video shot by the first monitoring equipment, wherein the monitoring equipment identifier sequence is determined based on the moving direction of the target monitoring object.
Optionally, the offset module includes:
the judgment submodule is used for judging whether the current coordinate contains a preset boundary point coordinate or not;
the first determining submodule is used for determining a second display window in the second display layer according to the moving direction of the target monitoring object when the boundary point coordinate is included, and moving the second display window to the tail of a display window queue included in the second display layer to obtain a first coordinate of the second display layer;
the second determining submodule is used for determining a second coordinate of the second display layer according to the first coordinate, the window offset and the moving direction of the target monitoring object;
the third determining submodule is used for determining the monitoring equipment identifier of the second monitoring equipment which does not display the video in the prestored monitoring equipment identifier sequence, and determining the monitoring equipment identifier arranged in the front as the monitoring equipment identifier corresponding to the second display window in the monitoring equipment identifier of the second monitoring equipment;
and the fourth determining submodule is used for determining a second coordinate of the second display layer according to the current coordinate, the window offset and the moving direction of the target monitoring object when the boundary point coordinate is not included.
Optionally, the obtaining module includes:
the acquisition submodule is used for acquiring the moving speed of a target monitoring object and the monitoring range of the monitoring equipment when the target monitoring object is detected;
a fifth determining submodule, configured to determine, according to the monitoring range and the moving speed, an occurrence duration of the target monitored object in a monitoring video of the monitoring device;
and the sixth determining submodule is used for dividing the occurrence duration by the preset offset times to obtain the switching time interval of the display layer.
According to the video display device provided by the embodiment of the application, in the state of displaying the first display layer, the switching time interval, the window offset and the current coordinate of the second display layer to be displayed can be obtained, and the window offset of the second display layer is offset from the position corresponding to the current coordinate to the direction same as the moving direction of the target monitoring object. Then, when the switching time interval is reached, the first display layer may be hidden, and the second display layer after the offset is displayed, so that the position of the target monitoring object when the second display layer is displayed is the same as the position when the first display layer is displayed. Because the display layer is shifted according to the movement of the target monitoring object and the shifted display layer is displayed, the target monitoring object can be always displayed in a preset area, and the video display effect when the moving target monitoring object is subjected to video monitoring is improved.
The embodiment of the present application further provides an electronic device, as shown in fig. 9, which includes a processor 901, a communication interface 902, a memory 903, and a communication bus 904, where the processor 901, the communication interface 902, and the memory 903 complete mutual communication through the communication bus 904,
a memory 903 for storing computer programs;
the processor 901 is configured to implement the following steps when executing the program stored in the memory 903:
acquiring a switching time interval, a window offset and a current coordinate of a second display layer to be displayed of the display layer in a state of displaying the first display layer;
shifting the second display layer from the position corresponding to the current coordinate to the window shift amount in the same direction as the moving direction of the target monitoring object;
and when the switching time interval is reached, hiding the first display layer and displaying the offset second display layer so as to enable the position of the target monitoring object when the second display layer is displayed to be the same as the position when the first display layer is displayed.
Optionally, the method further includes:
establishing at least two display layers based on a preset coordinate system, a preset layer establishing rule and a preset initial coordinate, wherein each display layer comprises at least two display windows which are displayed side by side;
determining first display windows with the same display areas in the at least two display layers;
and determining a monitoring equipment identifier of the first monitoring equipment corresponding to the first display window in a pre-stored monitoring equipment identifier sequence so as to enable the first display window to display the monitoring video shot by the first monitoring equipment, wherein the monitoring equipment identifier sequence is determined based on the moving direction of the target monitoring object.
Optionally, the shifting the second display layer from the position corresponding to the current coordinate to the direction same as the moving direction of the target monitoring object by the window shift amount includes:
judging whether the current coordinate comprises a preset boundary point coordinate or not;
if the boundary point coordinates are contained, determining a second display window in the second display layer according to the moving direction of the target monitoring object, and moving the second display window to the tail of a display window queue contained in the second display layer to obtain first coordinates of the second display layer;
determining a second coordinate of the second display layer according to the first coordinate, the window offset and the moving direction of the target monitoring object;
determining a monitoring equipment identifier of a second monitoring equipment which does not display the video in a pre-stored monitoring equipment identifier sequence, and determining the monitoring equipment identifiers arranged in the front as the monitoring equipment identifiers corresponding to a second display window in the monitoring equipment identifiers of the second monitoring equipment;
and if the boundary point coordinate is not included, determining a second coordinate of the second display layer according to the current coordinate, the window offset and the moving direction of the target monitoring object.
Optionally, the obtaining of the switching time interval of the display layer includes:
when a target monitoring object is detected, acquiring the moving speed of the target monitoring object and the monitoring range of the monitoring equipment;
determining the occurrence duration of the target monitoring object in the monitoring video of the monitoring equipment according to the monitoring range and the moving speed;
and dividing the occurrence duration by a preset offset number to obtain a switching time interval of the display layer.
The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
According to the electronic device provided by the embodiment of the application, in the state of displaying the first display layer, the switching time interval, the window offset and the current coordinate of the second display layer to be displayed can be acquired, and the window offset of the second display layer is offset from the position corresponding to the current coordinate to the direction same as the moving direction of the target monitoring object. Then, when the switching time interval is reached, the first display layer may be hidden, and the second display layer after the offset is displayed, so that the position of the target monitoring object when the second display layer is displayed is the same as the position when the first display layer is displayed. Because the display layer is shifted according to the movement of the target monitoring object and the shifted display layer is displayed, the target monitoring object can be always displayed in a preset area, and the video display effect when the moving target monitoring object is subjected to video monitoring is improved.
In yet another embodiment provided by the present application, a computer-readable storage medium is further provided, in which a computer program is stored, and the computer program, when executed by a processor, implements the steps of any of the above-mentioned video display methods.
In yet another embodiment provided by the present application, there is also provided a computer program product containing instructions which, when run on a computer, cause the computer to perform any of the video display methods of the above embodiments.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. A video display method is characterized in that the method is applied to video display equipment, the video display equipment is provided with at least two display layers, each display layer comprises a plurality of display windows which are arranged side by side, and the display windows which belong to the same display area in each display layer are used for displaying monitoring videos shot by the same monitoring equipment, and the method comprises the following steps:
acquiring a switching time interval, a window offset and a current coordinate of a second display layer to be displayed of the display layer in a state of displaying the first display layer;
shifting the second display layer from the position corresponding to the current coordinate to the window shift amount in the same direction as the moving direction of the target monitoring object;
and when the switching time interval is reached, hiding the first display layer and displaying the offset second display layer so as to enable the position of the target monitoring object when the second display layer is displayed to be the same as the position when the first display layer is displayed.
2. The method of claim 1, further comprising:
establishing at least two display layers based on a preset coordinate system, a preset layer establishing rule and a preset initial coordinate, wherein each display layer comprises at least two display windows which are displayed side by side;
determining first display windows with the same display areas in the at least two display layers;
and determining a monitoring equipment identifier of the first monitoring equipment corresponding to the first display window in a pre-stored monitoring equipment identifier sequence so as to enable the first display window to display the monitoring video shot by the first monitoring equipment, wherein the monitoring equipment identifier sequence is determined based on the moving direction of the target monitoring object.
3. The method according to claim 1, wherein the shifting the second display layer from the position corresponding to the current coordinate by the window shift amount to the same direction as the moving direction of the target monitoring object comprises:
judging whether the current coordinate comprises a preset boundary point coordinate or not;
if the boundary point coordinates are contained, determining a second display window in the second display layer according to the moving direction of the target monitoring object, and moving the second display window to the tail of a display window queue contained in the second display layer to obtain first coordinates of the second display layer;
determining a second coordinate of the second display layer according to the first coordinate, the window offset and the moving direction of the target monitoring object;
determining a monitoring equipment identifier of a second monitoring equipment which does not display the video in a pre-stored monitoring equipment identifier sequence, and determining the monitoring equipment identifiers arranged in the front as the monitoring equipment identifiers corresponding to a second display window in the monitoring equipment identifiers of the second monitoring equipment;
and if the boundary point coordinate is not included, determining a second coordinate of the second display layer according to the current coordinate, the window offset and the moving direction of the target monitoring object.
4. The method according to claim 1, wherein the obtaining of the switching time interval of the display layer comprises:
when a target monitoring object is detected, acquiring the moving speed of the target monitoring object and the monitoring range of the monitoring equipment;
determining the occurrence duration of the target monitoring object in the monitoring video of the monitoring equipment according to the monitoring range and the moving speed;
and dividing the occurrence duration by a preset offset number to obtain a switching time interval of the display layer.
5. The utility model provides a video display device, its characterized in that, the device is applied to video display equipment, video display equipment is provided with two at least display layers, and every display layer contains a plurality of display windows that set up side by side, and the display window that affiliated display area is the same in each display layer is used for showing the surveillance video that same surveillance equipment was shot, the device includes:
the acquisition module is used for acquiring a switching time interval of a display layer, a window offset and a current coordinate of a second display layer to be displayed in a state of displaying the first display layer;
the shifting module is used for shifting the window offset from the position corresponding to the current coordinate of the second display layer to the direction same as the moving direction of the target monitoring object;
and the display module is used for hiding the first display layer and displaying the offset second display layer when the switching time interval is reached so as to enable the position of the target monitoring object when the second display layer is displayed to be the same as the position when the first display layer is displayed.
6. The apparatus of claim 5, further comprising:
the system comprises an establishing module, a display module and a display module, wherein the establishing module is used for establishing at least two display layers based on a preset coordinate system, a preset layer establishing rule and a preset initial coordinate, and each display layer comprises at least two display windows which are displayed side by side;
the first determining module is used for determining first display windows with the same display areas in the at least two display layers;
and the second determining module is used for determining the monitoring equipment identifier of the first monitoring equipment corresponding to the first display window in a prestored monitoring equipment identifier sequence so as to enable the first display window to display the monitoring video shot by the first monitoring equipment, wherein the monitoring equipment identifier sequence is determined based on the moving direction of the target monitoring object.
7. The apparatus of claim 5, wherein the offset module comprises:
the judgment submodule is used for judging whether the current coordinate contains a preset boundary point coordinate or not;
the first determining submodule is used for determining a second display window in the second display layer according to the moving direction of the target monitoring object when the boundary point coordinate is included, and moving the second display window to the tail of a display window queue included in the second display layer to obtain a first coordinate of the second display layer;
the second determining submodule is used for determining a second coordinate of the second display layer according to the first coordinate, the window offset and the moving direction of the target monitoring object;
the third determining submodule is used for determining the monitoring equipment identifier of the second monitoring equipment which does not display the video in the prestored monitoring equipment identifier sequence, and determining the monitoring equipment identifier arranged in the front as the monitoring equipment identifier corresponding to the second display window in the monitoring equipment identifier of the second monitoring equipment;
and the fourth determining submodule is used for determining a second coordinate of the second display layer according to the current coordinate, the window offset and the moving direction of the target monitoring object when the boundary point coordinate is not included.
8. The apparatus of claim 5, wherein the obtaining module comprises:
the acquisition submodule is used for acquiring the moving speed of a target monitoring object and the monitoring range of the monitoring equipment when the target monitoring object is detected;
a fifth determining submodule, configured to determine, according to the monitoring range and the moving speed, an occurrence duration of the target monitored object in a monitoring video of the monitoring device;
and the sixth determining submodule is used for dividing the occurrence duration by the preset offset times to obtain the switching time interval of the display layer.
9. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing mutual communication by the memory through the communication bus;
a memory for storing a computer program;
a processor for implementing the method steps of any of claims 1 to 4 when executing a program stored in the memory.
10. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of claims 1 to 4.
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